30 



s. Nakamura and K. Honda : 



Kaizu. 



The periods observed here during August 3-4 are as follows: 



TABLE 11. 



Kaizu. 



m. 



30.0x13 

 29.9x13 



m. 



12.3 X 25 

 11.7x23 



11.3x49 



Of these, only the last motion 11.3 was developed to such a 

 magnitude as to enable us to confidently assert its existence. 



Katada. 



The observations here extended from the 11th. to the. loth, 

 ■of August, but the oscillation of the lake was generally very small, 

 which made it difficult to determine the periods. Of the periods 





TABLE 12 





Katada. 



Ul. 



74.4 X 4 



70.8 X 4 



m. 



32.1x11 

 11.9X 6 



Ul. 



10.6x13 

 10.4 X 21 



given here, we may say from a careful examination of the limno- 

 grams that there existed at Katada probably twe motions of 32.1 

 nnd 10..'") minutes. 



